Multiple receiving device



FL Q. I.

W, 9 s W ws 4 *7 a Feb. 15

5 3 2. b r m w mm/v n? m m .6 Q u H a m a a y w Lil Patented Feb. 15, 1927.

PATENT OFFICE.

WALTER investme s Benefit, GER-MA Y, ASSIGIIOR T GENERAL coinrni-IY, Germanrron on NEW YORK.

MULTIPLE RECEIVING DEVICE.

' Application fil ed July 27,1925feria1 No. 46,289, and in Germany August 1, 1924.

My present invention'relates to a multiple receiving device for Connecting radio head sets or loud speakers in series.

It is an object of my invention to provide a simple and reliable means for connecting a plurality of receiving devices in series with each other and with a source of current supply. i

A further object of my invention resides in the means for normally short circuiting the pairs of jacks associated with the multiple receiving device, together with means for removing the short circuit from any pair of jacks when a receiver plug is inserted there- 1n, 7

p The novel features which I believe to be characteristic of my invention are set forth with particularity in the appended claims. My invention itself, however, both as to its organization and method of operation will best be understood from the following specification taken in connection with the accompanying drawing in which Fig. 1 is a view partly in cross-section and partly in elevation; Fig. 2 a plan view partly broken away; 3 is a wiring diagram of the multiple receiving device; and Fig. 4; is a detail view showing the circuit interrupting device associated with each pair of jacks.

A plurality of pairs of jacks a and b are arranged radially in a multiple receiving device C, which may be constructed in any manner desired. Into jack a of each pair of jacks there extend an insulating pin d which is fastened on. a leaf spring 6 conductively connected to jack 6. Leaf spring 6 makes contact with a second leaf spring which is conductively connected to jack a. Consequently, the individual airs of jacks are short circuited and are connected in series by the contact device and the connections 9 which extend between adjacent pairs of jacks. When a plug connected to a head set or loud speaker is introduced into a pair of jacks, the pin (Z associated with that pair of jacks is pressed outwardly so that the contact between the two leaf springs e and 7" of that pair is interrupted. The short circuit connection between the two jacks a and l) of the pair of jacks is thus eliminated so that the audio frequency currentmay flow through the head set or similar device connected to the jacks. In other words, by introducing the head set plugs in the pair of jacksflhe individual head sets become auto-.

matically connected to the source of current supply, and thus may be connected to the multiple r ceiving device in any desired order.

Various modifications of my invention will readily suggest themselves to persons skilled in the art without departing from the scope of my invention as set forth in the appended claims. 7

What I claim as new and desire to secure by Letters Patent of the United States, is

1. In combination, a multiple receiving device comprising a plurality of pairs of jacks, means normally short circuiting each of said pair of jacks, said means including a spring contact, and an insulating pin mounted on said contact and projecting into one of said jacks whereby the connection of a receiving device to any one of said pairs of jacks removes the short circuit therefrom.

2. In combination, a multiple receivin device comprising a plurality of pairs or. jacks, means normally short circuiting each pair of aclrs, said means including a plurality of spring contacts, and means for automatically removing said short circuit when a receiving device is connected to a pair of jacks, said means comprising an insulating pin connected to one of said contacts and projecting into one of said'jacks.

3. In combination, a multiple receiving device including a plurality of pairs of contacts, means normally short circuit-ing said contacts, a movable insulating pin associated with each pair of contacts, and means whereby the connection of a receiving device to any one of said pairs of contacts actuates the pin associated with that pair of contacts to remove the short circuit therefrom.

I. In combination, a circuit including a plurality of pairs of contacts normally connected in series, and means for opening the circuit between certain of said contacts and for connecting a receiving device in that portion of the circuit, said means including a movable insulating pin connected to one of said contacts.

5. In combination, a pair of jacks, a of contacts normally short circuiting said jacks, a pin associated with one of said contacts and projecting into one of said jacks, whereby said contacts may be opened when a plug is inserted in said pair of jacks.

pair

ELECTRIC 6. In combination, a pair of jacks, a spring contact associated with one of said jacks and normally short circuiting said j acks an insulating pin associated with said spring contact and projecting through an opening into the other of said jacks whereby said contact my be actuated to open the short circuit when a plug is inserted in said jacks. v

7. In combination, a pair of jacks, one of which has an opening in the side thereof, a

spring contact connected to each'of said jacks, said contacts being normally in engagement and serving to short circuit the jacks, a pin mounted on one of said contacts and extending through the opening in'said one jack whereby said contacts may he opeined when a plug is inserted in said one ae In Witness whereof, I have hereunto set 20 my hand this 6th day of July, 1925.

VvAL-TER LAURENTIUS. 

